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Three-Phase Step Voltage Regulator Model for the Z-Bus Power Flow
  • Evangelos Pompodakis ,
  • Georgios C. Kryonidis ,
  • Minas Alexiadis
Evangelos Pompodakis
Aristotle Univerisity of Thessaloniki, Aristotle Univerisity of Thessaloniki, Aristotle Univerisity of Thessaloniki

Corresponding Author:[email protected]

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Georgios C. Kryonidis
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Minas Alexiadis
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Abstract

This letter presents a comprehensive Step Voltage Regulator (SVR) model suitable for the three-phase ZBUS power flow. The model can be applied in all SVR configurations such as open delta, close delta, wye. Its advantage is that the tap variations are simulated outside the YBUS matrix, without compromising the convergence of the power flow. Therefore, a refactorization of the YBUS matrix is not required after every tap change reducing significantly the computation time of the power flow. The proposed SVR model is validated in a 4-Bus network, while its performance is tested in the IEEE 8500-Node test feeder.
Oct 2021Published in Electric Power Systems Research volume 199 on pages 107443. 10.1016/j.epsr.2021.107443